currency [0..1] Trading currency of the underlyer when transacted as a cash instrument.

exchangeId [0..1] Identification of the exchange on which this asset is transacted for the purposes of calculating a contractural payoff. The term "Exchange" is assumed to have the meaning as defined in the ISDA 2002 Equity Derivatives Definitions.

clearanceSystem [0..1] Identification of the clearance system associated with the transaction exchange.

definition [0..1] An optional reference to a full FpML product that defines the simple product in greater detail. In case of inconsistency between the terms of the simple product and those of the detailed definition, the values in the simple product override those in the detailed definition.

relatedExchangeId [0..*] A short form unique identifier for a related exchange. If the element is not present then the exchange shall be the primary exchange on which listed futures and options on the underlying are listed. The term "Exchange" is assumed to have the meaning as defined in the ISDA 2002 Equity Derivatives Definitions.

optionsExchangeId [0..*] A short form unique identifier for an exchange on which the reference option contract is listed. This is to address the case where the reference exchange for the future is different than the one for the option. The options Exchange is referenced on share options when Merger Elections are selected as Options Exchange Adjustment.